Shuttle-threader block



l Aug. 3 1926. 1,594,624

W. E. LUNDGREN SHUTTLE THREADER BLOCK Filed Jan. so 19225.v

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Patented Aug. 3, 1926.

,UNITED STATES PATENT OFFICE.

WILLIAM E. LUND'GREN,'OE WORCESTER, MAssAoH'USETTs, ASSTGNOR TOOROMPTON a KNOWLES LOOM WORKS, or WORCESTER, MASSACHUSETTS, A CORPORATION OE MASSACHUSETTS.

i `Application filedk January This invention V relates `to self-threading shuttle blocks and it; is the principal Object ofthe invention-to providel a shuttle threader block whichJ will .1 effectively prevent mis- '.threading bythe use of a pair of normally `contacting "yielding tongues between which `tle yarn passes when the eye is beingthreade. A further yobject of the invention is to provide a Vshuttle threader block having portions nthereoffformed of resilient material which may be bent bythe operator to eifect slight adjustments. I

v A still .further -objectof my 'invention is to .provide a rshuttle threader block element ofj such design that thesame may. be employed either on right or-left hand shuttles.

With these, and other Objects in view which will appear. as the .description proceeds, my inventionl residespin ,the combination and arrangementv of parts hereinafter described 'and set forth in the claims.

In the accompanying drawings wherein 4I have shown one form of my invention,

Fig..l `is a top plan View of one end of a shuttle to, Y

Fig. 2 is a front elevation-Of the shuttle looking in the direction of arrow 2, Fig. 1,-- Fig. 3 vis ajvertical section on line 3-3 of Fig. j

Fig. 4 is Fig. 1,` i A gFig. 5 is a horizontal fseotion o-nl line 5*5 of Figpl, and j Fig. 6 is a perspectiveview of the element forming an important` partof myinvention.

having my invention applied therea vertical section Yon line 4-4 of Referring more.particularly to the draw- Y ings itv willvberseen `that I have provided a shuttle lo-suitably formed to hold` a -bO-bbin i 11 `and having therein a yvertical slot 12 throughxwhich the bobbin passes at'the time of replenishing. j

The eye end of the shuttle is provided with a slot` 13 kwhich receives the vertical walls 14 and 15 ,respectively ofthe block 16, said walls deining a thread passage 17. As shown in Fig. 4there is extending from wall 1'5l across theV passage 17 a hooked extension 18 so disposed as to catch the thread as the latter isunwound from the bobbin 11. A :telt pad 19may be secured in any approved manner in block 16 and lServeswith the hook SHUTTLE-THREADER BLOCK.`

3o, 1925. serial No. 5,839.l

18V to define an entrance tothe passage 17 A foot 2O indicated indotted 'lines in Fig. `2, depends from the block 16y and has'extending therethrougha bolt 21xby means of which the (block isv held securely tothe shuttle.

In' carrying `out my inventionI form the lower portion off" the block 16 witha substantially horizontal-surface 30 to which is secured the bottom `wall 31 of a retainer 32.2

As shown in Fig. 6 the retainer is formed of ya singlepieceof sheet material, preferably fpointedfdownwardly asindicated in Fg.'13

and being injcontact serve to close the `passage 17 to preventthey yarn from ballooningtout of said passage. f j

As shown in Fig. 1 the wooden part of the shuttleisprovided'with a laterally extending opening 35 through which the yarn may extendend is further provided with a sloping channel .36 extending substantially in alignment with thev passage 17.` The tongues 34'terminatefat apoint somewhat above the bottom of the channel 36 as shown in Fig. 2.

In order to .hold the retainer in placethe same may be secured bymeans ofscrew 38 Vwhich is threaded into the bottom of the block v16. As shown more particularly Lin Figs. 1, 5', and 6 each tongue has extending therefrom a guard 39 formed with a notch A40 .which will receive the yarn should it fail to be properly threaded.. Y y

In operation, whena fresh bobbin has been put in the shuttle'by the replenishing mechanism not shown) the thread thereon which vextends to thethread holder will lie above the passage 17. As the shuttleis picked out of the box the yarn will unwind in such a direction as will cause the same to `pass down the narrow space dened between the hooked "extension 18y andthe adjacent wall 14 of the shuttle block. As the shuttle continues its flight across the loom the weft, indicated at "W, will be drawn downwardly between the pletely threaded, but should the thread fail to enter passage it will fall inte one or the other of the 'notches 40.

The guard adjacent the passage 35 lies high enough above the wood-en portion of the shuttle thereunder to permit the yarn7 to enter said passage 35 and the other guard extends beyond the rea-r wall 4l of channel 36 to prevent the yarn from passing around the guard. Also, the rear guard is preferably somewhat lower than the vadjacent wooden portion of the shuttle.

From thel foregoing it `will Lbei` seen thaty maybe bent tosthe desired adjustment and .it A'will be noted further that the tongues are disposed symmetrically about the axis of the passage4 17 sothatthe thread `may be drawn either to the right or to the left, making the element usable on eithera right or left hand loom.v

Having thiis^'desciibed my invention it will be apparentgthatx-changes andl modifications may-,be made therein by Athose skilled Yin the art without1 departing from they spirit and scope ofthe invention and I do not wish to bev limited tothe details herein disclosed, but ywhatiI claim -is: i.

1.111 a self threading shuttle vhavinga thread passage therethrough, Y a block` having bottom and side walls, a threadretainer forming part of the thread "passage and having a pairy of similarly formed resilient tongues extending downwardly andin the direction in which the weft is drawn through the passage, one tongue extendingfrom each of the side walls of the block, thetip ends of said tongues being normally in Contact to close the top side of the thread passage and yieldable to allow the weftftopass therebetween.

2. In a selfl threading shuttle, a block havingr side and .bottom .walls defining a ythread passage, a thread retainer associated with Ithe block, and resilientdownwardly extending pointed tongues carried bythe retainerA for the upper portion of .the .thread passage, said. tongues extending in a direction substantially parallel to the threadas the latterpasses through the passage and being normally in contact with each other and yieldable to permit yarn to passitherebetween'. y M

3. In aself threading shuttle'having a thread passa-gey therethrough, a retainer for lthe thread, and similarly `formed normally contactingk yieldable downwardly extending tongues extending from opposite sides of v8. Ina self threa u v substantially Lvertical."walls located -in lthe shuttle and having-extending thereving tongues at least one of which .is yieldable, said shuttle being formed with a groove located under the tongues, said tongues extending above thebottom of the groove and in the same direction in which the thread is drawnthrough the passage.

. g5. In a: self threading shuttlel having a thread passagetherein, 4a4v thread retainer located inthe passage, downwardly extending resilient normally `contacting tongues formed with the retainer to close the upper side of the thread passage, and extending in the direction in which the thread is drawn through the passage,- and thread guardsy formed on said retainer, one guard being adjacent each ytongue and deining therewith a notch to receive the thread.` y i y 6.2111 a vself threadingshuttle, a block having side and bottoni walls to define three sides of athread passage, afl thread Aretainer secured to thebottom wall of vthe block and extending along the side walls, and normal- [1y contacting ydownwardly extending Vtongues lying'in the same ldirection as-that in which-l the thread is drawn through the passage formed on the upper lpartof'the retainer,

the tonguesextendingtoward eachother fromthe opposite sides of saidretainer to Aclose the threadpassage, atleast one of said vtongueslbeing yieldable andmovable from the other 'tongue to define aV passage for ythread.

" 7. Afthreadret.ainer forza Iselfthreading shuttle having a thread passage Itherethrough and comprising bottoni and `side `vwalls and.having the 'upper lportion' therevof'formed'with a pair of normally contacty,ing downwardly extending .tongues lying in the saine direction as that in which the E, l,thread is drawn through the passa-ge atleast u oneof which ltongues' yis resilient 4with respect tdtheother. l i 4' eine; Shame, @tiet-k yhavtlirough a thread passage,fa threadretainer associated with the block, resilientnormally contacting ,tongues extending' from opposite sides of the retainer to close the upper Vportion kofthe thread passage andyguards associated with each tonguesaid guards defining ainotch with the tongue,v the shuttle being provided vwith an outlet communicating positionedfto. receivev the thread slioul the latter' fail to enter thev outlet. z

,9. InA agselfspthreading shuttleihaving a ing with the thread passage, the notches bet thread passage therein, a thread retainer formed on one ofthe tongues and extending having yieldable normally contacting downbeyond the rear Wall of the channel to de- Wardly extending tongues to close the upper ne with the tongue a thread receiving 10 portion of the thread passage, the shuttle notch. a

5 being provided with a channel extending In testimony whereof I have hereunto aff substantially in alignment with the thread Xed my signature. passage under the tongues, and a guard WILLIAM E'. LUNDGREN. 

